TY  - BOOK
AU  - Ratcliff, R A
TI  - Delusions of Intelligence: Enigma, Ultra and the End of Secure Ciphers 
SN  - 9780521736626
U1  - 940.548743 
PY  - 2006///
CY  - New York
PB  - Cambridge University Press
KW  - Enigma Cipher System
ER  -